Undefeated former world lightweight champion Brandon “Bam Bam” Rios (31-0, 22 KOs) and top-rated contender “Mile High” Mike Alvarado (33-1, 23 KOs) were at the Rank Gym in Las Vegas Wednesday for a scheduled media workout in advance of Rios-Alvarado II on Saturday at the Mandalay Bay Events Center in Las Vegas, Nev. Rios didn’t work out, but did pose for photographers. The WBO interim junior welterweight championship will be at stake.

The HBO telecast will also include undefeated Terence Crawford (19-0, 15 KOs) in an important ten-round junior welterweight clash with Breidis Prescott (26-4, 20 KOs). Former U.S. Olympian Jose Ramírez (1-0, 1 KO) will be featured on the undercard.